Myeloid cells express chemokines (CXCL12 and CXCL10) as chemoattractants to recruit T cells expressing their receptors (CXCR4 and CXCR3), which is consistent with the pathological findings indicating chronic lymphocytic thyroiditis in P1 and P2 patients. The gene discussed is CXCL12; the disease is Hashimoto thyroiditis.